Abstract
Optical detection of volatile electron deficient analytes via fluorescence quenching is demonstrated using ca. 200 nm diameter template-synthesized polyfluorene nanofibers as nanoscale detection elements. Observed trends in analyte quenching effectiveness suggest that, in addition to energetic factors, analyte vapor pressure and polymer/analyte solubility play an important role in the emission quenching process. Individual nanofibers successfully act as luminescent reporters of volatile nitroaromatics at sub-parts per million levels. Geometric factors, relating to the nanocylindrical geometry of the fibers and to low nanofiber substrate coverage, providing a less crowded environment around fibers, appear to play a role in providing access by electron deficient quencher molecules to the excited states within the fibers, thereby facilitating the pronounced fluorescence quenching response.
| Original language | English |
|---|---|
| Pages (from-to) | 4421-4428 |
| Number of pages | 8 |
| Journal | Analytical Chemistry |
| Volume | 87 |
| Issue number | 8 |
| DOIs | |
| Publication status | Published - Apr 21 2015 |
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ASJC Scopus subject areas
- Analytical Chemistry
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Luminescent optical detection of volatile electron deficient compounds by conjugated polymer nanofibers. / Wade, Aidan; Lovera, Pierre; O'Carroll, Deirdre M; Doyle, Hugh; Redmond, Gareth.
In: Analytical Chemistry, Vol. 87, No. 8, 21.04.2015, p. 4421-4428.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Luminescent optical detection of volatile electron deficient compounds by conjugated polymer nanofibers
AU - Wade, Aidan
AU - Lovera, Pierre
AU - O'Carroll, Deirdre M
AU - Doyle, Hugh
AU - Redmond, Gareth
PY - 2015/4/21
Y1 - 2015/4/21
N2 - Optical detection of volatile electron deficient analytes via fluorescence quenching is demonstrated using ca. 200 nm diameter template-synthesized polyfluorene nanofibers as nanoscale detection elements. Observed trends in analyte quenching effectiveness suggest that, in addition to energetic factors, analyte vapor pressure and polymer/analyte solubility play an important role in the emission quenching process. Individual nanofibers successfully act as luminescent reporters of volatile nitroaromatics at sub-parts per million levels. Geometric factors, relating to the nanocylindrical geometry of the fibers and to low nanofiber substrate coverage, providing a less crowded environment around fibers, appear to play a role in providing access by electron deficient quencher molecules to the excited states within the fibers, thereby facilitating the pronounced fluorescence quenching response.
AB - Optical detection of volatile electron deficient analytes via fluorescence quenching is demonstrated using ca. 200 nm diameter template-synthesized polyfluorene nanofibers as nanoscale detection elements. Observed trends in analyte quenching effectiveness suggest that, in addition to energetic factors, analyte vapor pressure and polymer/analyte solubility play an important role in the emission quenching process. Individual nanofibers successfully act as luminescent reporters of volatile nitroaromatics at sub-parts per million levels. Geometric factors, relating to the nanocylindrical geometry of the fibers and to low nanofiber substrate coverage, providing a less crowded environment around fibers, appear to play a role in providing access by electron deficient quencher molecules to the excited states within the fibers, thereby facilitating the pronounced fluorescence quenching response.
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U2 - 10.1021/acs.analchem.5b00309
DO - 10.1021/acs.analchem.5b00309
M3 - Article
VL - 87
SP - 4421
EP - 4428
JO - Analytical Chemistry
JF - Analytical Chemistry
SN - 0003-2700
IS - 8
ER -